Introduction / Andrea de Guttry, Francesca Capone and Chritophe Paulussen
Foreign fighters in the Syria and Iraq conflict: statistics and characteristics of a rapidly growing phenomenon / Edwin Bakker and Mark Singleton
Foreign fighters involvement in national and international wars: a historical survey / Marcello Flores
Foreign fighters as a challenge for international relations theory / Francesco Strazzari
Foreign fighters: motivations for travel to foreign conflicts / Ross Frenett and Tanya Silverman
The emerging role of social media in the recruitment of foreign fighters / Gabriel Weimann
Analysing the recruitment and use of foreign men and women in ISIL through a genger perspective / Dallin Van Leuven, Dyan Mazurana and Rachel Gordon
The millitary impact of foreign fighters on the battlefield: the case of the ISIL / Fabrizio Coticchia
The status of foreign fighters under international humanitarian law / Emanuele Sommario
Foreign fighters and international criminal law / Robert Heinsch
Child soldiers: the expanding preactice of minors recruited to become foreign fighters / Francesca Capone
Armed opposition groups' (and foreign fighters') abidance by international human rights law: the issue of compliance in Syria and Iraq / Daniele Amoroso
The obligations under international law of the foreign fighter's state of nationality or habitual residence, state of transit and state of destination / Sandra Krähenmann
The role played by the UN in countering the phenomenon of foreign terrorist fighters / Andrea de Guttry
States' prevention and responses to the phenomenon of foreign fighters against the backdrop of international human rights obligations / Alex Conte
The reginal answers and governance structure for dealing with foreign fighters: the case of the EU / Gilles de Kerchove and Chritiane Höhn
Collecting and sharing intelligence on foreign fighters in the EU and its member states: existing tools, limitations and opportunities / Matteo E. Bonfanti
Towards effective regional responses to the phenomenon of foreign fighters: the OSCE toolbox / Annalisa Creta
The African union and the phenomenon of doreign fighters in Africa / Linda Darkwa
National responses in select Western European countries to the foreign fighter phenomenon / Christophe Paulussen and Eva Entenmann
How western non-EU states are responding to foreign fighters: a glance at the USA, Canada, Australia, and New Zealand's laws and policies / Aaron Y. Zelin and Johnathan Prohov
MENA countries' reponses to the foreign fighter phenomenon / Daveed Gartenstein-Ross and Bridgit Moreng
Foreign fighters and the deprivation of nationality: national practices and international law implications / Laura Van Waas
Caught in the crossfire: the impact of foreign fighters on internally displaced persons, asylum seekers and refugees from Syria and Iraq / Francesca Vietti and Mike Bisi
Concluding remarks / Andrea De Guttry, Francesca Capone and Chritophe Paulussen.